Facebook has begun testing a system for users to send messages to people outside their immediate circle of social contacts for a payment of $1, as the company continues to find new ways to capitalize on its popularity. The WSJ's Yun-Hee Kim has the story.

Facebook Inc. FB +2.55% said Thursday it has begun testing a system for users to send messages to people outside their immediate circle of social contacts for a payment of $1, as the company continues to find new ways to capitalize on its popularity.